Choke for SB-200

[lurch]

there was an artile in QST in the 70's on rolling yer own...actually
looked pretty easy if you have a dipper.

Lee Blaske wrote:
>
> Hi,
>
> I was wondering if anyone knew of a source for the 28 micro henry
> choke that's used in the Heath SB-200 linear amplifier. I'm currently
> restoring one of these amplifiers, and this choke is questionable.
> When I first tested it, it was open, but I discovered that the lead
> on one side was broken. I re-attached what I think is the end of the
> winding, but I question if there might be an internal short. The DC
> resistance of this choke is less than half an ohm. Could this be
> right?
>
> Some time ago, I had checked with Harbach, but offhand, he didn't
> know of a substitute. I see two 27 micro henry chokes listed in the
> Newark Catalog, but I'm not sure if they're big enough from a power
> handling standpoint.
>
> Does anyone have a better idea, or a source for this part?
>
> TIA
>
> 73,
>
> Lee Blaske N0IZ
>
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